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Joseph Myers 457622c2fa Fix strtod subnormal rounding (bug 30220)
As reported in bug 30220, the implementation of strtod-family
functions has a bug in the following case: the input string would,
with infinite exponent range, take one more bit to represent than is
available in the normal precision of the return type; the value
represented is in the subnormal range; and there are no nonzero bits
in the value, below those that can be represented in subnormal
precision, other than the least significant bit and possibly the
0.5ulp bit.  In this case, round_and_return ends up discarding the
least significant bit.

Fix by saving that bit to merge into more_bits (it can't be merged in
at the time it's computed, because more_bits mustn't include this bit
in the case of after-rounding tininess detection checking if the
result is still subnormal when rounded to normal precision, so merging
this bit into more_bits needs to take place after that check).

Tested for x86_64.
2024-08-27 12:41:02 +00:00
advisories Document CVE-2024-33599, CVE-2024-33600, CVE-2024-33601, CVE-2024-33602 2024-05-06 15:12:31 -04:00
argp Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
assert assert: Mark __assert_fail as cold 2024-07-26 20:41:00 +08:00
benchtests benchtests: Add random memset benchmark 2024-08-07 14:58:46 +01:00
bits socket: Use may_alias on sockaddr structs (bug 19622) 2024-05-18 09:33:19 +02:00
catgets Fix conditionals on mtrace-based tests (bug 31892) 2024-07-01 17:20:30 +02:00
ChangeLog.old Add ChangeLog file 2024-07-21 18:33:37 +02:00
conform conform: Reformat Makefile. 2024-02-25 13:38:16 -05:00
csu Add crt1-2.0.o for glibc 2.0 compatibility tests 2024-05-06 07:49:40 -07:00
ctype ctype: Reformat Makefile. 2024-02-25 13:38:16 -05:00
debug support: Add FAIL test failure helper 2024-07-26 13:21:34 +01:00
dirent powerpc: Remove duplicated versionsort from libm.a (BZ 31789) 2024-05-23 13:41:29 -03:00
dlfcn dlfcn: Reformat Makefile. 2024-02-25 13:38:16 -05:00
elf nptl: Fix Race conditions in pthread cancellation [BZ#12683] 2024-08-23 14:27:43 -03:00
gmon Define write_profiling functions only in profile library [BZ #31756] 2024-05-22 06:12:55 -07:00
gnulib Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
hesiod hesiod: Reformat Makefile. 2024-02-25 13:38:16 -05:00
htl hurd: Fix missing pthread_ compat symbol in libc 2024-08-01 23:58:51 +02:00
hurd x86_64 hurd: ensure we have a large enough buffer to receive exception_raise requests. 2024-07-30 16:59:12 +02:00
iconv iconv: Fix matching of multi-character transliterations (bug 31859) 2024-08-05 16:49:57 +02:00
iconvdata iconv: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence (CVE-2024-2961) 2024-04-17 09:21:40 -03:00
include Define __libc_initial for the static libc 2024-08-09 16:17:14 +02:00
inet inet: Avoid label at end of compound statement in tst-if_nameindex 2024-08-26 16:45:31 +02:00
intl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
io Test mkdirat use of mode argument 2024-08-22 11:25:14 +00:00
libio ungetc: Fix backup buffer leak on program exit [BZ #27821] 2024-08-15 13:56:13 -04:00
locale support: Use macros for *stat wrappers 2024-08-16 16:05:20 +02:00
localedata support: Use macros for *stat wrappers 2024-08-16 16:05:20 +02:00
login login: Re-flow and sort multiline Makefile definitions 2024-08-07 11:02:03 -03:00
mach mach: Drop some unnecessary vm_param.h includes 2024-01-03 21:59:54 +01:00
malloc malloc: Link threading tests with $(shared-thread-library) 2024-08-20 16:16:25 +02:00
manual manual: Add Descriptor-Relative Access section 2024-08-27 10:16:10 +02:00
math added inputs giving large errors on x86_64 for new C23 functions 2024-08-07 14:28:46 +02:00
mathvec Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
misc Add mremap tests 2024-08-01 05:06:12 -07:00
nis Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
nptl nptl: Fix Race conditions in pthread cancellation [BZ#12683] 2024-08-23 14:27:43 -03:00
nptl_db Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
nscd nscd: Use time_t for return type of addgetnetgrentX 2024-05-02 18:59:29 +02:00
nss nss: Fix incorrect switch fall-through in tst-nss-gai-actions 2024-08-07 15:00:25 +02:00
po po/*: regenerate (only line number changes) 2024-07-21 17:50:35 +02:00
posix support: Use macros for *stat wrappers 2024-08-16 16:05:20 +02:00
resolv resolv: Fix tst-resolv-short-response for older GCC (bug 32042) 2024-08-01 21:07:48 +02:00
resource Always define __USE_TIME_BITS64 when 64 bit time_t is used 2024-04-02 15:28:36 -03:00
rt debug: Fix clang mq_open fortify wrapper (BZ 31917) 2024-06-27 13:32:48 -03:00
scripts Use binutils 2.43 branch in build-many-glibcs.py 2024-08-06 17:00:50 +00:00
setjmp Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
signal signal/Makefile: Split and sort tests 2024-07-01 13:47:27 +02:00
socket Fix name space violation in fortify wrappers (bug 32052) 2024-08-05 16:49:58 +02:00
soft-fp soft-fp: Add brain format support 2024-02-01 19:06:54 +01:00
stdio-common Add more tests of getline 2024-08-21 19:58:14 +00:00
stdlib Fix strtod subnormal rounding (bug 30220) 2024-08-27 12:41:02 +00:00
string string: strerror, strsignal cannot use buffer after dlmopen (bug 32026) 2024-08-19 15:48:03 +02:00
sunrpc Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
support support: Report errno constants in TEST_COMPARE failures 2024-08-26 16:46:45 +02:00
sysdeps x86: Enable non-temporal memset for Hygon processors 2024-08-26 10:01:58 -07:00
sysvipc Always define __USE_TIME_BITS64 when 64 bit time_t is used 2024-04-02 15:28:36 -03:00
termios Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
time time/Makefile: Split and sort tests 2024-07-12 17:33:28 +02:00
timezone timezone: sync to TZDB 2024a 2024-04-07 13:35:48 -07:00
wcsmbs Fix name space violation in fortify wrappers (bug 32052) 2024-08-05 16:49:58 +02:00
wctype Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
.clang-format Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 Convert to autoconf 2.72 (vanilla release, no distribution patches) 2024-06-17 21:15:28 +02:00
config.h.in Add pthread_getname_np and pthread_setname_np for Hurd 2024-07-16 09:21:52 +02:00
config.make.in manual: add syscalls 2024-07-09 11:54:29 +02:00
configure Turn on -Wimplicit-fallthrough by default if available 2024-08-09 15:34:53 +02:00
configure.ac Turn on -Wimplicit-fallthrough by default if available 2024-08-09 15:34:53 +02:00
CONTRIBUTED-BY crypt: Remove libcrypt support 2023-10-30 13:03:59 -03:00
COPYING
COPYING.LIB
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk locale: Handle loading a missing locale twice (Bug 14247) 2024-04-22 16:03:00 -04:00
INSTALL install.texi: bump "latest verified" versions 2024-07-21 00:27:35 +02:00
libc-abis riscv: support GNU indirect function 2021-01-10 21:25:13 -05:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Relicense IBM portions of resolv/base64.c resolv/res_debug.c. 2024-01-26 13:33:36 -05:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Turn on -Wimplicit-fallthrough by default if available 2024-08-09 15:34:53 +02:00
Makefile Pass -nostdlib -nostartfiles together with -r [BZ #31753] 2024-05-19 16:29:02 -07:00
Makefile.help math: Add support for auto static math tests 2024-05-21 16:53:27 -03:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Support compiling .S files with additional options 2024-02-25 09:22:40 -08:00
NEWS resolv: Implement strict-error stub resolver option (bug 27929) 2024-07-24 12:10:37 +02:00
o-iterator.mk
README Remove ia64-linux-gnu 2024-01-08 17:09:36 -03:00
Rules Rules: Also build memcheck tests even when not running them 2024-08-20 16:23:03 +02:00
SECURITY.md Adapt the security policy for the security page 2023-12-05 09:15:10 -05:00
SHARED-FILES localedata: Fix several issues with the set of characters considered 0-width [BZ #31370] 2024-05-15 14:31:06 +02:00
shlib-versions crypt: Remove libcrypt support 2023-10-30 13:03:59 -03:00
test-skeleton.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
version.h Increase version number to 2.40.9000 2024-07-21 18:49:35 +02:00

This directory contains the sources of the GNU C Library.
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